This giant tower beacon was a key navigation tool for pilots delivering mail amid the night skies.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

These century-old beehive-shaped kilns were built to produce charcoal for nearby mines.

An Idaho legend carved out a cave village with his own two hands.

A few dilapidated structures are all that remain of this deserted former silver mining town.

This combination shop and museum is filled with curious items and artifacts.

This museum glorifies the humble potato.

Inside this curiosity shop, visitors can peruse the clown collection or purchase a molar from the mouth of Bigfoot.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

A former sanitarium where soldiers were sent to recover in the healing waters of hot springs.

A lava tube cooled to form this long tunnel that stays chilly even at the height of summer.

A museum dedicated to the history and art of staying clean.

Home to a timed geyser created by complete accident.

During World War II, over 13,000 people of Japanese ancestry were forcibly removed from their homes and incarcerated in this camp in the Idaho desert.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

An impressive waterfall nestled in the cliffs of Idaho's Snake River Canyon.

This work of art by Matthew Mazzotta resides in this park dedicated to the first black legislator in Idaho.

This underground cave located in the most barren reaches of Idaho is filled with ice year-round.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

Three generations of intrepid collectors display their curious artifacts in a homemade museum right next to the caves they discovered.

This pop-culture shop also offers the chance to become part of their favorite tv show or movie.

The largest outdoor art gallery in the Northwest United States.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.